h2,h3,h4{
    margin: 0;
}
body{
    background: #f6f6f6;
    color: #333;
}
#time{
    width: 1200px;
    margin: 0 auto;
}
#time h2{
    font-size: 30px;
    text-align:center;
    margin: 50px 0;
    font-weight: normal;
}

.itemBox{
    height: 600px;
    position: relative;
    border: 1px solid #000;
}
.item{
    width: 160px;
    height: 190px;
    box-sizing: border-box;

    text-align: center;
    box-shadow: 0 0 5px 2px rebg(135, 135, 135, .15);
    border-radius: 5px;

    position: absolute;
}

/*位置定位*/

.item::before{
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    bottom: 0;

    background: #fff;
    border-radius: 5px;
    z-index: -1;
}
.head{
    width: 70px;
    height: 70px;
    background: #fff;
        
}

